Major dams in India are important for geography, general knowledge and competitive-exam preparation. Some are closely associated with major river-valley projects, while others are important for irrigation, water supply or hydropower. This guide covers 20+ well-known dams with their rivers, states and key facts.
20+ Major Dams in India: River and State
The table below is designed for quick revision. River and state associations are generally the most useful facts to memorise for GK questions.
| Dam | River | State | Major Uses / Importance |
|---|---|---|---|
| Bhakra Dam | Sutlej | Himachal Pradesh | Irrigation, hydropower and water regulation through the Bhakra-Beas system |
| Tehri Dam | Bhagirathi | Uttarakhand | Hydropower, irrigation and water supply |
| Sardar Sarovar Dam | Narmada | Gujarat | Irrigation, water supply and hydropower |
| Hirakud Dam | Mahanadi | Odisha | Flood moderation, irrigation and hydropower |
| Nagarjuna Sagar Dam | Krishna | Telangana–Andhra Pradesh region | Irrigation and hydropower |
| Srisailam Dam | Krishna | Andhra Pradesh–Telangana region | Hydropower and irrigation |
| Indira Sagar Dam | Narmada | Madhya Pradesh | Water storage, irrigation and hydropower |
| Omkareshwar Dam | Narmada | Madhya Pradesh | Hydropower and irrigation |
| Ukai Dam | Tapti (Tapi) | Gujarat | Irrigation, hydropower and water storage |
| Koyna Dam | Koyna | Maharashtra | Hydropower and water management |
| Mettur Dam | Cauvery | Tamil Nadu | Irrigation, water supply and hydropower |
| Krishnaraja Sagara (KRS) Dam | Cauvery | Karnataka | Irrigation and water supply |
| Tungabhadra Dam | Tungabhadra | Karnataka | Irrigation, hydropower and water storage |
| Almatti Dam | Krishna | Karnataka | Irrigation and hydropower |
| Rihand Dam | Rihand | Uttar Pradesh | Water storage, irrigation and power generation |
| Maithon Dam | Barakar | Jharkhand | Flood control, irrigation and hydropower |
| Panchet Dam | Damodar | Jharkhand | Flood control, irrigation and hydropower |
| Gandhi Sagar Dam | Chambal | Madhya Pradesh | Irrigation and hydropower |
| Bisalpur Dam | Banas | Rajasthan | Drinking-water supply and irrigation |
| Rana Pratap Sagar Dam | Chambal | Rajasthan | Hydropower and water management |
| Ranjit Sagar Dam | Ravi | Punjab | Hydropower and irrigation |
| Jayakwadi Dam | Godavari | Maharashtra | Irrigation and water storage |
| Kadamparai Dam | Aliyar system | Tamil Nadu | Hydropower and water management |
Important Dams You Should Know
1. Bhakra Dam
Bhakra Dam is built on the Sutlej River in Himachal Pradesh and is part of the wider Bhakra-Beas water-resource system. The project supports irrigation and power supply across northern India. The Bhakra-Beas Management Board regulates water and power from the Bhakra-Nangal and Beas projects for several beneficiary states and regions.
2. Tehri Dam
Tehri Dam is located on the Bhagirathi River in Uttarakhand. It is associated with hydropower generation, irrigation and water supply. Tehri is one of the most frequently asked dam-river-state combinations in Indian GK.
3. Sardar Sarovar Dam
Sardar Sarovar is built across the Narmada River in Gujarat. The project is important for irrigation and water supply and also has a major hydropower component. The Narmada basin's major hydropower projects include Sardar Sarovar, Indira Sagar and Omkareshwar.
4. Hirakud Dam
Hirakud Dam is built across the Mahanadi River at Sambalpur in Odisha. It is associated with flood moderation, irrigation and power generation and is one of India's best-known multipurpose river-valley projects.
5. Nagarjuna Sagar Dam
Nagarjuna Sagar is a major project on the Krishna River in the Telangana–Andhra Pradesh region. It is important for irrigation and hydropower and is a common question in geography and general-awareness examinations.
6. Mettur Dam
Mettur Dam is built on the Cauvery River in Tamil Nadu. The reservoir is important for irrigation and water supply in the Cauvery delta and adjoining areas, making Mettur a key dam-river association for South India GK.
7. Koyna Dam
Koyna Dam is located in Maharashtra on the Koyna River. The Koyna project is especially known for hydropower generation and is an important part of Maharashtra's water and power infrastructure.
Why Are Dams Built?
A dam can serve one or several purposes. Modern water-resource projects are often designed as multipurpose systems rather than for a single function.
| Purpose | How Dams Help |
|---|---|
| Irrigation | Stores and regulates water for agriculture through canals and distribution systems. |
| Hydropower | Uses the movement or fall of stored/released water to generate electricity. |
| Drinking-water supply | Provides regulated water storage for cities, towns and communities. |
| Flood management | Reservoir storage and controlled releases can help manage certain flood conditions. |
| Industrial water | Can provide a regulated source of water for industrial requirements. |
| Water storage | Helps maintain supplies across seasons when inflows vary. |
Major Dams by River
River-wise revision is useful because many competitive-exam questions ask you to identify the river associated with a dam.
| River | Important Dams / Projects |
|---|---|
| Narmada | Sardar Sarovar, Indira Sagar, Omkareshwar, Bargi |
| Krishna | Nagarjuna Sagar, Srisailam, Almatti |
| Cauvery | Mettur, Krishnaraja Sagara |
| Mahanadi | Hirakud, Gangrel/Ravishankar Sagar |
| Chambal | Gandhi Sagar, Rana Pratap Sagar, Jawahar Sagar |
| Sutlej | Bhakra |
| Bhagirathi | Tehri |
| Tapti (Tapi) | Ukai |
| Damodar | Panchet, Maithon |
| Ravi | Ranjit Sagar |
| Godavari | Jayakwadi and other major irrigation projects |
Important GK Facts About Dams in India
- Bhakra Dam is associated with the Sutlej River and Himachal Pradesh.
- Tehri Dam is associated with the Bhagirathi River and Uttarakhand.
- Hirakud Dam is associated with the Mahanadi River and Odisha.
- Sardar Sarovar Dam is associated with the Narmada River and Gujarat.
- Nagarjuna Sagar Dam is associated with the Krishna River.
- Mettur Dam is associated with the Cauvery River and Tamil Nadu.
- Ukai Dam is associated with the Tapti/Tapi River in Gujarat.
- Rihand Dam is located in Uttar Pradesh on the Rihand River.
- Maithon and Panchet are important dams of the Damodar Valley system.
- Koyna Dam is associated with the Koyna River in Maharashtra and is strongly linked with hydropower.
- Dams can support several functions at the same time, including irrigation, water supply, flood management and power generation.
- The Central Water Commission maintains national-level information and programmes relating to dam safety and large dams.
One-Minute Revision: Dam, River and State
| Dam | River | State / Region |
|---|---|---|
| Bhakra | Sutlej | Himachal Pradesh |
| Tehri | Bhagirathi | Uttarakhand |
| Sardar Sarovar | Narmada | Gujarat |
| Hirakud | Mahanadi | Odisha |
| Nagarjuna Sagar | Krishna | Telangana–Andhra Pradesh region |
| Mettur | Cauvery | Tamil Nadu |
| Koyna | Koyna | Maharashtra |
| Ukai | Tapti/Tapi | Gujarat |
| Rihand | Rihand | Uttar Pradesh |
| Tungabhadra | Tungabhadra | Karnataka |
How to Prepare Major Dams in India for GK
Use a layered approach instead of memorising a long list randomly. First learn the most frequently asked dam-river-state pairs. Then group dams by river basin and finally revise their primary purposes.
- Step 1: Memorise 10 core pairs such as Bhakra–Sutlej and Tehri–Bhagirathi.
- Step 2: Add the state or region to each pair.
- Step 3: Group dams under Narmada, Krishna, Cauvery, Chambal and other major rivers.
- Step 4: Learn whether the project is mainly associated with irrigation, hydropower, water supply, flood management or multiple uses.
- Step 5: Verify exact heights, capacities and current project details from official sources when needed.
Frequently Asked Questions
Which is the dam on the Sutlej River commonly asked in Indian GK?
Bhakra Dam is the well-known dam associated with the Sutlej River.
Which river is Tehri Dam built on?
Tehri Dam is built on the Bhagirathi River in Uttarakhand.
Which river is Hirakud Dam built on?
Hirakud Dam is built across the Mahanadi River in Odisha.
Which river is Sardar Sarovar Dam built on?
Sardar Sarovar Dam is built across the Narmada River in Gujarat.
Which river is Nagarjuna Sagar Dam built on?
Nagarjuna Sagar Dam is built on the Krishna River in the Telangana–Andhra Pradesh region.
Which dam is built on the Cauvery River in Tamil Nadu?
Mettur Dam is a major dam on the Cauvery River in Tamil Nadu.
Why are dams important in India?
Dams can provide irrigation water, hydropower, drinking-water supply, storage and flood-management benefits, depending on the project.
What is the easiest way to study dams for competitive exams?
Use the Dam–River–State pattern first, then revise the major purpose and river basin associated with each project.
Are all dams used only for generating electricity?
No. Many dams are multipurpose projects supporting irrigation, water supply, storage, flood management and hydropower.
Where can I verify information about dams in India?
The Central Water Commission, India-WRIS, National Portal of India and the relevant state or project authority are useful official sources for project information.
Related General Knowledge Guides
Continue with CalcuPortal's General Knowledge guides, including Important Rivers in India, Important Lakes in India, Indian States and Capitals, Indian States and Languages and Highest Mountains in India.
Official Sources for Further Verification
- Central Water Commission — national water-resource and dam-safety information.
- India-WRIS — water-resource and river-basin information.
- National Portal of India — government information and project references.